1147984 has 20 divisors (see below), whose sum is σ = 2243284. Its totient is φ = 569088.

The previous prime is 1147981. The next prime is 1147987. The reversal of 1147984 is 4897411.

It is an interprime number because it is at equal distance from previous prime (1147981) and next prime (1147987).

It can be written as a sum of positive squares in 2 ways, for example, as 685584 + 462400 = 828^2 + 680^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2284 + ... + 2740.

2^1147984 is an apocalyptic number.

It is an amenable number.

1147984 is a deficient number, since it is larger than the sum of its proper divisors (1095300).

1147984 is a wasteful number, since it uses less digits than its factorization.

1147984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622 (or 616 counting only the distinct ones).

The product of its digits is 8064, while the sum is 34.

The square root of 1147984 is about 1071.4401523184. The cubic root of 1147984 is about 104.7076979963.

The spelling of 1147984 in words is "one million, one hundred forty-seven thousand, nine hundred eighty-four".